12320634431 has 16 divisors (see below), whose sum is σ = 14373254400. Its totient is φ = 10556746200.

The previous prime is 12320634367. The next prime is 12320634461. The reversal of 12320634431 is 13443602321.

It is not a de Polignac number, because 12320634431 - 2⁶ = 12320634367 is a prime.

It is a super-2 number, since 2×12320634431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12320634394 and 12320634403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320634461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1385060 + ... + 1393926.

It is an arithmetic number, because the mean of its divisors is an integer number (898328400).

Almost surely, 2^12320634431 is an apocalyptic number.

12320634431 is a deficient number, since it is larger than the sum of its proper divisors (2052619969).

12320634431 is an frugal number, since it uses more digits than its factorization.

12320634431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939 (or 12925 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The spelling of 12320634431 in words is "twelve billion, three hundred twenty million, six hundred thirty-four thousand, four hundred thirty-one".